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A325606
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Lower left-hand x-coordinate for 4 X 4 invisible forest with 0 < x < y.
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11
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7247643, 6349914, 13449225, 3268473, 16799913, 12209988, 7676094, 25869732, 27330093, 19113828, 3689958, 8579373, 35193585, 10557390, 31662993, 40976505, 20262723, 47516988, 12932424, 10792494, 13027728, 24801060, 44040840, 37959282, 42196362, 16439577, 43732038
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refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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These are 4 X 4 rectangles of lattice points not visible along straight lines of sight from the origin. The sequence is ordered by Euclidean distance from (0,0).
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LINKS
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EXAMPLE
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(7247643, 10199370), (6349914, 13125369), (13449225, 13458288), (3268473, 21374352), (16799913, 22339875)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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